Earth-prints repository, logo   DSpace

About DSpace Software
|earth-prints home page | roma library | bologna library | catania library | milano library | napoli library | palermo library
Please use this identifier to cite or link to this item:

Authors: Consolini, G.*
De Michelis, P.*
Meloni, A.*
Title: Fluid motions in the Earth’s core inferred from time spectral features of the geomagnetic field
Title of journal: Physical Review E
Series/Report no.: 3 / 65 (2002)
Publisher: The American Physical Society
Issue Date: 2002
DOI: 10.1103/PhysRevE.65.037303
Keywords: Geomagnetism
Secular variation
Earth's core
Abstract: The aim of this work is to investigate the time spectral features of the main geomagnetic field fluctuations as measured on the Earth’s surface in connection with a nontraditional turbulent dynamics of the fluid motions in the outer layers of the Earth’s liquid core. The average geomagnetic field spectrum is found to be a power law, characterized by a spectral exponent α≈−11/3, on time scales longer than 5 yr. We discuss the spectral exponent in connection with an intense magnetic field in the Earth’s core and with a vortex coalescence process in a regime of drift-wave turbulence.
Appears in Collections:04.05.01. Dynamo theory
04.01.03. Mantle and Core dynamics
04.05.05. Main geomagnetic field
Papers Published / Papers in press

Files in This Item:

File SizeFormatVisibility
PRE03.pdf48.77 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Share this record




Stumble it!



Valid XHTML 1.0! ICT Support, development & maintenance are provided by CINECA. Powered on DSpace Software. CINECA